It's not just humans that smile – most mammals do, too, and scientists have suggested that the smile is a way of expressing harmlessness to predators.
Smiles are international - they are understood by everyone, regardless of culture, race or religion. The smile is so important and can change so much in a moment that we think it should be celebrated today on Smile Power Day with a Royal Smile.
It's also National Beer Day Britain
Established by beer sommelier and writer, Jane Peyton in 2015, National Beer Day Britain is celebrated annually on the 15th June.
The date was chosen due to its being when the Magna Carta was sealed in 1215 with ale mentioned in clause 35, which says, "Let there be throughout our kingdom a single measure for wine and a single measure for ale and a single measure for corn, namely 'the London quarter'."
The idea of Beer Day Britain is to enjoy beer in a pub or brewery taproom and to bring back signing around pub pianos.
Accordingly, the folk behind BeerDayBritain.co.uk.hope you will sing the 'Cheers To Beer' anthem at 7pm. Or you could avoid all that commotion and enjoy a quiet pint, or in the spirit of Cocktail of the Day and all things British, mix up a Jack Pot.
Today is also Blackadder's birthday
Back in 1983, in the days when breakfast TV was a novelty and cable - let alone satellite -- TV a thing of the distant future, the first series of a sitcom then named The Black Adder aired on British television.
It would propel writer Richard Curtis to Hollywood screenwriting and star Rowan Atkinson to a multi £million fortune and an impressive car collection. It would help put Stephen Fry on his way to national treasure status and enable Hugh Laurie to earn $400,000 for a single episode of House. And Baldrick? Tony Robinson? Well, he went on to present Time Team for 20 years and sit on the Labour Party executive committee.